Physics of Turbulent Jet Ignition, 1st ed. 2018
Mechanisms and Dynamics of Ultra-lean Combustion
Springer Theses Series

Language: English

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Physics of Turbulent Jet Ignition
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Physics of Turbulent Jet Ignition
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This book focuses on developing strategies for ultra-lean combustion of natural gas and hydrogen, and contributes to the research on extending the lean flammability limit of hydrogen and air using a hot supersonic jet. The author addresses experimental methods, data analysis techniques, and results throughout each chapter and:
  • Explains the fundamental mechanisms behind turbulent hot jet ignition using non-dimensional analysis
  • Explores ignition characteristics by impinging hot jet and multiple jets in relation to better controllability and lean combustion
  • Explores how different instability modes interact with the acoustic modes of the combustion chamber.
This book provides a potential answer to some of the issues that arise from lean engine operation, such as poor ignition, engine misfire, cycle-to-cycle variability, combustion instability, reduction in efficiency, and an increase in unburned hydrocarbon emissions. This thesis was submitted to and approved by Purdue University.

Introduction.- Ignition Mechanisms.- Schlieren Image Velocimetry (SIV).- Supersonic Jet Ignition.- Combustion Instability at Lean Limit.- Ignition by multiple turbulent jets.- Impinging Jet Ignition.- Flame Propagation in Microchannels.- Summary and outlook.- Appendix.- Conclusion.
Sayan Biswas received his PhD in Aeronautics and Astronautics from Purdue University in 2017. He is the recipient of numerous awards, including the Magoon Award for Excellence in Teaching from the College of Engineering, Purdue University, in 2017.
Explores how to design a safe and reliable gas engine combustor operating at ultra-lean conditions Contains an introduction and background information on emission regulation and penalties, natural gas and hydrogen, and greenhouse emissions Contains chapters on multi-jet ignition, impinging jet ignition, and supersonic jet ignition